Optical Fiber Communications
The third edition of this popular text and reference book presents the fundamental principles for understanding and applying optical fiber technology to sophisticated modern telecommunication systems.
Optical-fiber-based telecommunication networks have become a major information-transmission-system, with high capacity links encircling the globe in both terrestrial and undersea installations. Numerous passive and active optical devices within these links perform complex transmission and networking functions in the optical domain, such as signal amplification, restoration, routing, and switching. Along with the need to understand the functions of these devices comes the necessity to measure both component and network performance, and to model and stimulate the complex behavior of reliable high-capacity networks.
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2 Response Time The response time of a photodiode together with its output
circuit ( see Fig . 6 - 8 ) depends mainly on the following three factors : 1 . The
transit time of the photocarriers in the depletion region . 2 . The diffusion time of
A typical response time of a partially depleted photodiode is shown in Fig . 6 - 12
. The fast carriers allow the device output to rise to 50 percent of its maximum
value in approximately 1 ns , but the slow carriers cause a relatively long delay ...
100 % - - - Response from slow carriers Percent of total output 50 % Response
from fast carriers 10 102 103 FIGURE 6 - 12 Typical response time of a
photodiode that is not fully depleted . Time ( ns ) the depletion region are
collected quickly ...
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Overview of Optical Fiber Communications
Structures Waveguiding and Fabrication
Signal Degradation in Optical Fibers
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